公开(公告)号：US10951071B2

公开(公告)日：2021-03-16

申请号：US15953148

申请日：2018-04-13

Applicant: CENTER FOR INTEGRATED SMART SENSORS FOUNDATION

Inventor： Kyung Hak Lee ,  Young Ki Kim ,  Jae Hyun Choi ,  Hyun Wook Lee

IPC: H02J50/40 ,  H02J50/12 ,  H02J50/20 ,  H02J50/10 ,  H02J7/00 ,  H02J7/02 ,  H03L7/08 ,  H02J50/80

Abstract: Disclosed is a transmitter used for a wireless charging system. The transmitter includes a plurality of phase locked loops (PLLs) that outputs single-phase power signals, a plurality of antennas that transmits power signals transmitted from the plurality of PLLs to a receiver, and a controller that determines a specific frequency for the receiver based on a signal strength indication (RSSI) received from the receiver and allows output frequencies of the plurality of PLLs to be different from each other in a specific frequency band preset based on the specific frequency.

公开(公告)号：US10547198B2

公开(公告)日：2020-01-28

申请号：US15643088

申请日：2017-07-06

Applicant: CENTER FOR INTEGRATED SMART SENSORS FOUNDATION

Inventor： Kyung Hak Lee ,  Hyun Wook Lee ,  Young Ki Kim ,  Chong Min Kyung

IPC: H02J7/00 ,  H02J7/02 ,  H02J50/40

Abstract: Disclosed is a wireless charging system of using multi-frequency including at least one transmitter and at least one receiver which is wirelessly charged by the at least one transmitter, wherein the at least one transmitter includes a signal generator configured to generate a power signal of each of a plurality of frequency bands; a plurality of matching units connected to the signal generator matching and outputting the power signal of each of the plurality of frequency bands; and at least one antenna connected to the plurality of matching units transmitting the power signal of each of the plurality of frequency bands to each of at least one receiver, and wherein the at least one receiver includes at least one antenna receiving a power signal of each of a plurality of frequency bands from each of at least one transmitter; a plurality of matching units connected to the at least one antenna matching and outputting the power signal of each of the plurality of frequency bands; and a plurality of rectifiers connected to the plurality of matching units rectifying AC power applied to the power signal of each of the plurality of frequency bands to DC power.

公开(公告)号：US20180309325A1

公开(公告)日：2018-10-25

申请号：US15956337

申请日：2018-04-18

Applicant: CENTER FOR INTEGRATED SMART SENSORS FOUNDATION

Inventor： Kyung Hak Lee ,  Young Ki Kim ,  Jae Hyun Choi ,  Hyun Wook Lee

IPC: H02J50/12 ,  H02J50/80 ,  H02J7/02 ,  H02J50/20 ,  H02J5/00 ,  H02J50/40

CPC classification number: H02J50/40 ,  H02J50/10 ,  H02J50/20

Abstract: Disclosed is a transmitter used in a wireless charging system. The transmitter includes at least one phase locked loop (PLL) that outputs a power signal, a first antenna that transmits the power signal transmitted from the at least one PLL to at least one receiver in an RF scheme, a second antenna that transmits the power signal to the at least one receiver in one of a magnetic resonance scheme and a magnetic induction scheme, and a controller that selectively drives at least one of the first and second antennas.

公开(公告)号：US20180309454A1

公开(公告)日：2018-10-25

申请号：US15953148

申请日：2018-04-13

Applicant: Center For Integrated Smart Sensors Foundation

Inventor： Kyung Hak Lee ,  Young Ki Kim ,  Jae Hyun Choi ,  Hyun Wook Lee

IPC: H03L7/08 ,  H02J7/00 ,  H02J7/02 ,  H02J50/40

CPC classification number: H02J50/20 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80

Abstract: Disclosed is a transmitter used for a wireless charging system. The transmitter includes a plurality of phase locked loops (PLLs) that outputs single-phase power signals, a plurality of antennas that transmits power signals transmitted from the plurality of PLLs to a receiver, and a controller that determines a specific frequency for the receiver based on a signal strength indication (RSSI) received from the receiver and allows output frequencies of the plurality of PLLs to be different from each other in a specific frequency band preset based on the specific frequency.

公开(公告)号：US20180013313A1

公开(公告)日：2018-01-11

申请号：US15643088

申请日：2017-07-06

Applicant: CENTER FOR INTEGRATED SMART SENSORS FOUNDATION

Inventor： Kyung Hak Lee ,  Hyun Wook Lee ,  Young Ki Kim ,  Chong Min Kyung

IPC: H02J7/02 ,  H02J7/00

Abstract: Disclosed is a wireless charging system of using multi-frequency including at least one transmitter and at least one receiver which is wirelessly charged by the at least one transmitter, wherein the at least one transmitter includes a signal generator configured to generate a power signal of each of a plurality of frequency bands; a plurality of matching units connected to the signal generator matching and outputting the power signal of each of the plurality of frequency bands; and at least one antenna connected to the plurality of matching units transmitting the power signal of each of the plurality of frequency bands to each of at least one receiver, and wherein the at least one receiver includes at least one antenna receiving a power signal of each of a plurality of frequency bands from each of at least one transmitter; a plurality of matching units connected to the at least one antenna matching and outputting the power signal of each of the plurality of frequency bands; and a plurality of rectifiers connected to the plurality of matching units rectifying AC power applied to the power signal of each of the plurality of frequency bands to DC power.